CVE-2004-1995 in Fusetalk
Summary
by MITRE
Cross-Site Request Forgery (CSRF) vulnerability in FuseTalk 2.0 allows remote attackers to create arbitrary accounts via a link to adduser.cfm.
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Analysis
by VulDB Data Team • 08/18/2024
The CVE-2004-1995 vulnerability represents a critical cross-site request forgery flaw in FuseTalk 2.0 forum software that enables remote attackers to exploit the system's authentication mechanisms. This vulnerability resides in the application's handling of user registration requests, specifically within the adduser.cfm component which processes new user account creation. The flaw fundamentally stems from the absence of proper validation mechanisms to verify the authenticity of requests originating from legitimate users versus malicious actors. Attackers can craft malicious links that, when clicked by unsuspecting users, automatically submit registration requests to the vulnerable system without user knowledge or consent, effectively allowing unauthorized account creation.
The technical implementation of this CSRF vulnerability demonstrates a classic lack of anti-forgery token validation within the application's user registration workflow. When a user accesses the adduser.cfm page, the system should validate that the request originates from a legitimate source within the same session context. However, FuseTalk 2.0 fails to implement proper session validation or token verification mechanisms, making it susceptible to attacks where malicious actors can construct URLs containing pre-filled registration parameters. These crafted links can be embedded in malicious websites, email attachments, or social engineering campaigns, exploiting the trust relationship between the user's browser and the vulnerable forum application.
The operational impact of this vulnerability extends beyond simple unauthorized account creation, as it can serve as a stepping stone for more sophisticated attacks within the application ecosystem. An attacker who successfully exploits this CSRF flaw can create multiple accounts, potentially leading to spamming activities, forum abuse, or even credential harvesting if the system allows for password reset mechanisms to be triggered through the account creation process. The vulnerability particularly affects community forums and discussion platforms where user-generated content is prevalent, as unauthorized accounts can be used to post malicious content, engage in harassment, or manipulate forum statistics. This weakness undermines the fundamental security assumptions of user authentication and authorization within the application's access control model.
Security professionals should consider this vulnerability in the context of the CWE-352 category, which specifically addresses cross-site request forgery flaws in software applications. The ATT&CK framework would classify this as a privilege escalation technique under the 'Exploitation for Privilege Escalation' tactic, as unauthorized account creation can potentially lead to increased access rights or system control. Mitigation strategies should include implementing robust anti-CSRF token mechanisms within the application's session management, ensuring that all state-changing operations require validation of user intent through unique tokens generated per session. Organizations should also implement proper referer header validation, enforce strict session management policies, and consider implementing additional authentication factors for critical operations. The vulnerability underscores the importance of defense-in-depth approaches to web application security and highlights the necessity of comprehensive security testing including automated scanning and manual penetration testing to identify similar flaws in legacy systems.